Permutation-padlock.



No. 783,152. PATENTED FEB. 21, 1905.

W. L. STONE.

PERMUTATION PA-DLOGK.

APPLICATION FILED APR. 29.1904.

witwwwo WmfW CEzQ UNITED I STATES Patented. February 21, 1905.

PATENT OEETCE.

PERMUTATlON-PADLOCK.

SPECIFICATION forming part of Letters Patent No. 783,152, dated February 21, 1905.

Application filed April 29,1904. Serial No. 205,529.

To all 11/7'1/01'11/ it may concern:

Be it known that I, WILLIAM LEGRANDE STONE, a citizen of the United States, and a resident of VVyalusing, in the county of Bradford and State of Pennsylvania, have invented a new and usefullmprovement in Permu tation- Padlocks, of which the following is a specification.

My invention relates to an improvement in permutation-padlocks and is shown as applied to a padlock provided with a sliding shackle, although not limited in its use thereto.

The object of my invention is to prod uce a keyless locking means which may be easily and quickly operated by one who knows the combination and cheaply constructed, yet one which is neat in appearance, strong, and durable.

To this end myinvention consists in certain novel details of construction and combinations of parts, such as will be more fully described hereinafter and particularly set forth in the claims.

In the accompanying drawings, Figure 1 is a longitudinal sectional view taken through my device, parts being shown in full lines. Fig. 2 is an end view of the casing, the operating parts being removed. Fig. 3 is a View in side elevation of the rear resilient spacingdisk. .Fig. 4 is a view in side elevation of one of the intermediate friction-rings. Fig. 5 is a similar view of the forward tumbler-disk. Fig. 6 is a view in side elevation, showing a modification of one of the intermediate tumbler-disks. Fig. 7 is an end view of the spindle or arbor. Fig. 8 is a view in side elevation of the graduated disk or dial-plate; and Fig. 9 is a view in side elevation, showing the preferred form of my tumbler-disks.

A indicates the barrel or casing of my improved padlock, which case is preferably, although not necessarily, cylindrical in conformation and is provided at one end with a stepped cylindrical bore (J, which has a passage 1 communicating therewith for the reception of the long arm 2 of the shackle B, the shorter arm 3 of the shackle being removably seated in a recess 4, formed in the body of the casing. The casing'may be composed of any suitable materiakin which the recess, bore,

and opening are cored, and the arms of the shackle B are each provided with shoulders 5 5, which serve to limit the inward movement of the arms with respect to the casing.

The open end of the bore 0 is closed by means of an apertured cap-plate 6, which is shouldered, as at 7 7, to engage the stepped end wall of the casing to which it is secured, and'this plate is recessed, as at 8, for the reception of the end of the arm 2 of the shackle. The cap-plate is provided with a dial 9 on its outer face, as seen in Fig. 8. Passing through the aperture 10 of the cap-plate 6 is the spindle 11, the outer end of which is provided with a knob 12, carrying a pointer 13, which moves over the dial as the spindle is rotated.

The opposite end of the spindle is received in a seat 14, formed in the casing, and immediately adjacent the seat 14 is formed a chamber 15. The inner end of the longer arm 2 of the shackle is provided with one or more notches 16, which notch is designed to receive the peripheries of the tumblers 17, 18, and 19.

The interior wall of the bore C is provided with a plurality of grooves 34 34. Adjacent the cap-plate 6 of the casing the spindle is provided with a squared or other shaped portion 20, upon which is received the front locking-tumbler 17, provided with a correspondingly-shaped aperture 21. This tumbler, as shown in Fig. 5, is provided with a pin or stud 22, projecting laterally therefrom, and the tumbler also has an approximately semicircular recess 23 formed in "its periphery. This tumbler is fast on the spindle 11 and rotates therewith.

Adjacent the tumbler 17 is a resilient friction-ring 24, which, as shown in Fig. 4, comprises an annular member provided with an enlarged aperture, the annulus having ears or lugs 25 25 projecting radially therefrom and received in the grooves 34 34, formed in the wall of the bore, whereby to prevent the rotation of the ring and retain it stationary. The ring also is provided with a recess 26 to permit the passage of the end of the arm 2 therethrough. Next adjacent the ring 24 is the second locking-tumbler 18, constructed, preferably, as shown in Fig. 9. This tumbler is loosely mounted on the cylindrical spindle 11, the face of the tumbler opposite the disk 17 being provided with a countersunk portion 27 in which is received and travels the end of the stud 22 on the disk 17, While the opposite face of disk 18 is itself provided with a similar stud 22, passing through the disk and protruding into the countersunk portion to serve as a stop against which the end of pin 22 on disk 17 impinges, by means of which construction the tumbler-disk 18 is rotated. The tumbler-disk 18 is also provided with a semicircular peripheral recess 29, as shown. A second friction-ring is positioned adjacent the tumbler-disk 18, or, in otherwords, between the tumbler-disk 18 and the rear tumbler-disk 19, the friction-ring 30 being in all respects similar to the friction-ring 24 heretofore described. The rear tumbler 19 is provided with a countersunk portion 27 for the reception of the stud on disk 18, the countersink having a pin therein against which the pin or stud 22, carried by disk 18, impinges, and located against the rear face of the disk 19 is a friction-disk 32, (shown in Fig. 3,) which disk is provided with the ears 28 28 and peripheral recess 34 and the aperture of which serves as a bearing or guide for the inner portion of the spindle.

Encircling the spindle and located within the chamber 15 is a coiled spring 33, one end of which bears against the rear wall of the chamber and the other end of which spring presses against the rear friction-disk 32, the object of which construction is to press the tumbler-disks and friction-rings closely together to prevent rattling and accidental movement thereof, thus retaining them in the positions in which they remain after locking or unlocking the padlock.

It is obvious that a greater number of tumblers than are herein shown may be employed, and it is further obvious that the positions of the pins or studs may be changed relative to one another and to the respective peripheral recesses of the disks, whereby to alter or vary the combination.

In Fig. 6 I have shown a slight modification of the tumbler-disks wherein in place of a circular countersink or depression the disk is provided .with an arc-shaped slot 34, and in making a set of disks like these the disk farthest removed from the fast disk would be provided with the longest slot or slot having the greater number of degrees, the next disk would have the next longest slot, and so on. Of course an annular slot might be formed and the pin carried by the disk extended rearwardly into the slot to form a stop for the pin in the adjacent disk, as in the preferred form, this proving to be the easier and cheaper form to manufacture.

The operation is as follows: Supposing the parts are in locked position, as shown in Fig. 1, wherein the solid portions of the peripheries of the locking-disks 17, 18, and 19 are re- 5 ceived in the notch 16, the knob 12 is rotated, carrying with it the fast disk 17, the stud 22 of which, traveling in the slot 27 of the next adjacent locking-disk 18, finally engages the stud or pin carried therebyand rotates the disk 18. A continued movement of the spindle, which now rotates tumblers 17 and 18, will cause the pin carried by tumbler 18 to engage the pin in the countersink in tumbler 19 and rotate that disk as well until the peripheral recess thereof is brought into alinement with the opening or passage 1 in-the casing, which fact will be ascertained by consulting the dial and pointer in the usual manner, having the correct combination in mind. The

knob is now rotated in the reverse direction,"

' were 8, 2, 5 the spindle would first be turned toward the right, or in a clockwise direction, until the numeral 8 on the dial was reached by the pointer. Then the direction of movement of the spindle would be reversed until the pointer indicated the numeral 2, whereupon the spindle would be once more reversed until the numeral 5 was reached, when it would be possible to release and entirely remove the shackle. A reversal of these movements would completely lock the shackle in position again, or if it were only desired to partially lock the shackle the spindle'could be turned a few points only, thereby setting disk 17, but retaining the peripheral recesses of the disks 18 and 19 in alinement with the opening 1, so that a single movement would be suflicient to release the shackle. The entire removal or separation of the shackle from the casing is of importance when it is desired to have the shackle engage and confine links of larger contour than can beinserted between the casing and the free end of the shackle when the longer end thereof is still retained in the casing. The shackle is also rotatable in the casing. When it is desired to change the combination, all thatis necessary is to set the pins or studs at different points on the faces of the disks from those previously occupied, the studs being'receivable in any one of a series of apertures in the disks. (Not shown.) The purpose of the enlarged openings in the rings 24 and 30 is to permit the free engagement of the pins and slots.

It is obvious that many changes might be made in the form and arrangement of the several parts described without departing from IIO the spirit and scope of my invention, and hence I do not wish to limit myself to the exact construction herein set forth; but,

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

l. A permutation-lock comprisinga hollow casing, a rotating spindle, and a shackle, the spindle provided with a locking-tumbler secured thereto, a plurality of locking-tumblers loosely mounted on the spindle, friction-rings supported by the casing and located intermediate the locking-tumblers, a friction-disk loosely mounted on the spindle at the inner end thereof and means engaging the disk and adapted to force the rings and tumblers into close contact.

2. A permutation-lock comprising a casing, the inner end of the casing provided with a main chamber, a restricted chamber and a stepped bearing of less area than the restricted chamber, the outer open end of the casing providcd with a series of stepped abutments, a rotatable shackle removably received in the easing, an apertured cap-plate for closing the stepped open end of the casing, the cap-plate provided with a plurality of peripheral shoulders engaging the stepped abutments, a spindle journaled in and passing through the capplate, the inner end of the spindle received in the stepped bearing formed at the inner end of the casing, a series of tumblers loosely journaled on the spindle within the main chamber of the casing, a friction-disk located adjacent the innermost tumbler and a spring seated in ber communicates, the inner end of the casing provided with a restricted chamber means for closing the open end of the casing, a spindle, a series of tumblers loosely mounted thereon, and a spring received in the restricted chamber and exerting a pressure against the tumblers to maintain their close engagement.

4. In a permutation-lock, the combination with a casing and a shackle receivable therein, of a rotating spindle, a series of tumblers loosely journaled on the spindle, one side of each loose disk provided with a circular countersink, studs carried by the loose disk, the studs projecting transversely through the disks and extending laterally from each side thereof, one end of each stud stationarily located in the countersunk portion of its respective disk to form a stop, the opposite ends of each of the studs received and traveling in the countersunk portion of the adjacent disk and adapted to abut against the end of the stud stationarily located in such countersunk portion, and means for rotating the disks.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

WIll l lIAllI LEGRANDE STONE.

WVitnesses:

ScovILLn ALLIs, J. WV. CHAMBERLAIN. 

